I develop software and about 95% of my work deals with databases.
I enjoied the advantages of using Microsoft Excel in my projects
in order to make reports but recently I decided to convert myself
to the free OpenOffice suite.
I faced with the problem of exporting data to Excel without having
Office installed on my computer.
The first solution was to create directly an Excel format compatible file:
this solution is about 50 times faster than the OLE solution but there
is a problem: the output file is not compatible with OpenOffice.
I wanted a solution which was compatible with each "DataSet";
at the same time I wanted to export only the dataset data present in
a DBGrid and not all the "DataSet".
Finally I obtained this solution which satisfied my requirements.
I hope that it will be usefull for you too.

First of all you must import the ADOX type library
which will be used to create the Excel file and its
internal structure: in the Delphi IDE:

1)Project->Import Type Library:
2)Select "Microsoft ADO Ext. for DDL and Security"
3)Uncheck "Generate component wrapper" at the bottom
4)Rename the class names (TTable, TColumn, TIndex, TKey, TGroup, TUser, TCatalog) in
(TXTable, TXColumn, TXIndex, TXKey, TXGroup, TXUser, TXCatalog)
in order to avoid conflicts with the already present TTable component.
5)Select the Unit dir name and press "Create Unit".
It will be created a file named AOX_TLB.
Include ADOX_TLB in the "uses" directive inside the file in which you want
to use ADOX functionality.

//we make a call to the "EnableControls" procedure and then restore
// the "BeforeScroll" and "AfterScroll" events and the "AutoCalcFields" property.procedure EnableDependencies(DataSet: TDataSet; ScrollEvents: TScrollEvents);begin
with DataSet do
beginEnableControls;with ScrollEvents do
beginBeforeScroll := BeforeScroll_Event;
AfterScroll := AfterScroll_Event;
AutoCalcFields := AutoCalcFields_Property;end;end;end;